c 2b 2b basic code

1#include<iostream>
2using namespace std;
3
4int main()
5{
6cout << " hello world <<endl;
7  
8  return 0;
9}

1help me i dont now what the freak am doing any more

1// Your First C++ Program
2
3#include <iostream>
4
5int main() {
6    std::cout << "Hello World!";
7    return 0;
8}

1// Your First C++ Program
2
3#include <iostream>
4
5int main() {
6    std::cout << "Hello World!";
7    return 0;
8}
9

1#include <iostream>
2#include<conio.h> /* For getch() only */
3using namespace std;
4int main () {
5   int num = 10;
6            if (num % 2 == 0)
7            {
8                cout<<"It is an even number";
9            }
10getch();  /* getch is the function of conio.h */
11}

1#include<iostream>
2using namespace std;
3int main()
4{
5	system("pause"); //To pause the screen
6  	return 0; //Not neccessary
7}